/* ================================
   Header & Navigation Styles
   ================================ */

/* ===== Top Bar ===== */
.top-bar {
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  padding: var(--spacing-2) 0;
  position: relative;
  z-index: var(--z-index-sticky);
}

.top-bar__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-4);
}

.top-bar__left {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  flex-wrap: wrap;
}

.top-bar__left a,
.top-bar__left span {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  color: var(--color-white);
  transition: var(--transition-colors);
}

.top-bar__left a:hover {
  color: rgba(255, 255, 255, 0.8);
}

.top-bar__left i {
  font-size: 0.875rem;
}

.top-bar__left .separator {
  opacity: 0.5;
}

.top-bar__right {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.top-bar__right a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  color: var(--color-white);
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-all);
  font-size: 0.875rem;
}

.top-bar__right a:hover {
  background-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

/* Hide top bar on mobile */
@media (max-width: 767px) {
  .top-bar {
    display: none;
  }
}

/* ===== Header ===== */
.header {
  background-color: var(--color-white);
  position: sticky;
  top: 0;
  z-index: var(--z-index-sticky);
  transition: var(--transition-all);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.header.sticky {
  box-shadow: var(--shadow-md);
}

.header .container {
  position: relative;
}

/* ===== Navbar ===== */
.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-4) 0;
  transition: var(--transition-all);
}

.header.sticky .navbar {
  padding: var(--spacing-3) 0;
}

/* Logo */
.navbar__logo {
  display: flex;
  align-items: center;
  z-index: 2;
}

.navbar__logo img {
  height: 50px;
  width: auto;
  transition: var(--transition-all);
}

.header.sticky .navbar__logo img {
  height: 45px;
}

/* Main Menu */
.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar__menu > li {
  position: relative;
}

.navbar__menu > li > a {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  color: var(--color-secondary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  padding: var(--spacing-2) 0;
  position: relative;
  transition: var(--transition-colors);
}

.navbar__menu > li > a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.navbar__menu > li > a:hover {
  color: var(--color-primary);
}

.navbar__menu > li > a:hover::after {
  width: 100%;
}

.navbar__menu > li.active > a {
  color: var(--color-primary);
}

.navbar__menu > li.active > a::after {
  width: 100%;
}

/* Dropdown indicator */
.navbar__menu > li.has-dropdown > a::after {
  display: none;
}

.navbar__menu > li.has-dropdown > a i {
  font-size: 0.75rem;
  transition: transform var(--transition-base);
}

.navbar__menu > li.has-dropdown:hover > a i {
  transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background-color: var(--color-white);
  box-shadow: var(--shadow-lg);
  border-radius: var(--border-radius-base);
  padding: var(--spacing-3);
  margin-top: var(--spacing-2);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: var(--transition-all);
  z-index: var(--z-index-dropdown);
}

.navbar__menu > li.has-dropdown:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown li {
  list-style: none;
}

.dropdown li a {
  display: block;
  padding: var(--spacing-2) var(--spacing-3);
  color: var(--color-secondary);
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-sm);
  transition: var(--transition-all);
}

.dropdown li a:hover {
  background-color: var(--color-gray-50);
  color: var(--color-primary);
  padding-left: var(--spacing-4);
}

/* Navbar Actions */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
}

.navbar__actions .btn {
  padding: 0.75rem 1.75rem;
  font-size: var(--font-size-base);
  border-radius: var(--border-radius-base);
}

/* Mobile Toggle Button */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: var(--z-index-fixed);
}

.mobile-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-secondary);
  border-radius: 2px;
  transition: var(--transition-all);
}

.mobile-toggle.active span:nth-child(1) {
  transform: translateY(10.5px) rotate(45deg);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-10.5px) rotate(-45deg);
}

/* ===== Mobile Menu ===== */
.mobile-menu {
  position: fixed;
  top: 0;
  right: -100%;
  width: 100%;
  max-width: 320px;
  height: 100vh;
  background-color: var(--color-white);
  box-shadow: var(--shadow-2xl);
  padding: var(--spacing-8) var(--spacing-6);
  overflow-y: auto;
  transition: right var(--transition-base);
  z-index: calc(var(--z-index-fixed) - 1);
}

.mobile-menu.active {
  right: 0;
}

.mobile-menu__close {
  position: absolute;
  top: var(--spacing-4);
  right: var(--spacing-4);
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--color-secondary);
  background-color: var(--color-gray-50);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: var(--transition-all);
  border: none;
}

.mobile-menu__close:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

.mobile-menu__list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-8) 0 0 0;
}

.mobile-menu__list li {
  border-bottom: 1px solid var(--color-gray-200);
}

.mobile-menu__list li:last-child {
  border-bottom: none;
}

.mobile-menu__list li a {
  display: block;
  padding: var(--spacing-4) 0;
  color: var(--color-secondary);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  transition: var(--transition-colors);
}

.mobile-menu__list li a:hover,
.mobile-menu__list li a.active {
  color: var(--color-primary);
  padding-left: var(--spacing-2);
}

/* Mobile Menu Backdrop */
.mobile-menu-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.5);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-all);
  z-index: calc(var(--z-index-fixed) - 2);
}

.mobile-menu-backdrop.active {
  opacity: 1;
  visibility: visible;
}

/* ===== Responsive Styles ===== */

/* Tablet and below */
@media (max-width: 991px) {
  .navbar__menu {
    display: none;
  }

  .navbar__actions .btn {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }
}

/* Mobile */
@media (max-width: 767px) {
  .navbar {
    padding: var(--spacing-3) 0;
  }

  .navbar__logo img {
    height: 40px;
  }

  .header.sticky .navbar__logo img {
    height: 38px;
  }
}

/* Desktop - fine-tune spacing */
@media (min-width: 1200px) {
  .navbar__menu {
    gap: var(--spacing-10);
  }
}